Problems with ArcGIS Pro 3 and urllib3

[MichaelNüßlein]

I want to connect to my portal in ArcGIS Pro within a Jupyter Notebook using command arcgis.gis.GIS('pro') . This works fine in ArcGIS Pro 2.9 (screenshot 1 below). If I try the same thing in ArcGIS Pro 3.0, an error message appears (screenshot 2 below).

ConnectionError: A connection error has occurred: (Caused by ProxyError('Your proxy appears to only use HTTP and not HTTPS, try changing your proxy URL to be HTTP. See: https://urllib3.readthedocs.io/en/1.26. x/advanced-usage.html#https-proxy-error-http-proxy', SSLError(SSLError(1, '[SSL: WRONG_VERSION_NUMBER] wrong version number (_ssl.c:1129)'))))

Does anyone know anything here

Best regards

Armin

ArcGIS Pro 2.9 works fine

ArcGIS Pro 2.9 works

ArcGIS Pro 3.0 command fails

ArcGIS Pro 3.0 error

[ShaunWalbridge · Accepted solution]

Could you confirm what version of Server is running the portal? My guess is this is some mismatch between client and portal environment that likely is a bug. ArcGIS Pro 3.0 includes OpenSSL 3, and it has some higher security requirements when authenticating clients.

[MichaelNüßlein]

I try to connect to a portal version 10.9.1

[ShaunWalbridge · Accepted solution]

I haven't heard other reports of this, but it sounds like a technical issue that should be looked at, and may be related to proxy configuration or other settings on top of the version difference. Are you able to log a bug for this issue?

[MichaelNüßlein]

I have open a Support case to log a bug. 

In the meentime i have tested to connect to a Portal for ArcGIS 11 installation (with a self signed certificat). It works with ArcGIS Pro 2.9 but fails with ArcGIS Pro 3.0.1

[To · Accepted solution]

Michael, 

I'm running into a similar problem after upgrading ArcPro. How did you resolve it? Thank you!

[To]

I found that adding the below parameter to the arcgis.gis.GIS call resolves/suppresses the issue for me.

 use_gen_token=True